New Hampshire Official Rare Plants List – Effective 01/01/2020
Table 312.1 Federally Listed Rare Plant Species
Scientific Name (with authority) Common Name Federal Status
Astragalus robbinsii (Oakes) Gray var. jesupii Egglest. &
Jesup's milk-vetch Endangered
Sheldon
Isotria medeoloides (Pursh) Raf. small whorled pogonia Threatened
Scirpus ancistrochaetus Schuyler northeastern bulrush Endangered
New Hampshire Official Rare Plants List – Effective 01/01/2020
Table 312.2 State Listed Endangered Plant Species
Scientific Name (with authority) Common Name
Acalypha virginica L. Virginia three-seeded-Mercury
Adlumia fungosa (Ait.) Greene ex B.S.P. Allegheny-vine
Aletris farinosa L. white colic-root
Allium canadense L. var. canadense meadow garlic
Allium schoenoprasum L. wild chives
Allium tricoccum Ait. var. burdickii Hanes narrow-leaf wild leek
Amerorchis rotundifolia (Banks ex Pursh) Hultén round-leaved orchid
Andersonglossum virginianum (L.) J.I. Cohen ssp. boreale
wild hound's-tongue
(Fern.) A. Haines [ined.]
Anemone cylindrica Gray long-headed windflower
Arabis pycnocarpa M. Hopkins var. pycnocarpa hairy eared-rockcress
Arctous alpina (L.) Nied. alpine bearberry
Arethusa bulbosa L. dragon's-mouth
Argentina anserina (L.) Rydb. common silverweed
Arisaema dracontium (L.) Schott green-dragon
Aristida tuberculosa Nutt. seaside threeawn
Arnica lanceolata Nutt. ssp. lanceolata lance-leaved arnica
Artemisia campestris L. ssp. caudata (Michx.) Hall &
field wormwood
Clements
Asclepias purpurascens L. purple milkweed
Asclepias quadrifolia Jacq. four-leaved milkweed
Asclepias tuberosa L. ssp. tuberosa butterfly milkweed
Asplenium rhizophyllum L. walking spleenwort
Astragalus alpinus L. var. brunetianus Fern. alpine milk-vetch
Astragalus robbinsii (Oakes) Gray var. jesupii Egglest. &
Jesup's milk-vetch
Sheldon
Atriplex subspicata (Nutt.) Rydb. saline orache
Aureolaria virginica (L.) Pennell downy false foxglove
Barbarea orthoceras Ledeb. American yellow-rocket
Bartonia iodandra B.L. Robins. purple screwstem
Bartonia paniculata (Michx.) Muhl. twining screwstem
Betula pumila L. bog birch
Bidens hyperborea Greene northern beggar-ticks
Bidens laevis (L.) B.S.P. smooth beggar-ticks
Bistorta vivipara (L.) Delarbre alpine bistort
Boechera laevigata (Muhl. ex Willd.) Al-Shehbaz smooth rockcress
Brachyelytrum erectum (Schreb.) Beauv. southern short husk grass
Bromus kalmii Gray Kalm's brome
Bromus pubescens Muhl. ex Willd. hairy wood brome
New Hampshire Official Rare Plants List – Effective 01/01/2020
Scientific Name (with authority) Common Name
Calamagrostis canadensis (Michx.) Beauv. var. langsdorfii
harsh bluejoint
(Link) Inman
Calamagrostis canadensis (Michx.) Beauv. var.
Macoun's bluejoint
macouniana (Vasey) Stebbins
Calamagrostis coarctata (Torr.) Torr. ex Eat. Nuttall's reed grass
Calamagrostis stricta (Timm) Koel. ssp. stricta neglected reed grass
Calypso bulbosa (L.) Oakes ssp. americana (R. Br. ex Ait.
fairy-slipper
f.) A. Haines
Calystegia spithamaea (L.) Pursh ssp. spithamaea upright false bindweed
Cardamine bellidifolia L. var. bellidifolia alpine bitter-cress
Cardamine bulbosa (Schreb. ex Muhl.) B.S.P. bulbous bitter-cress
Cardamine concatenata (Michx.) Sw. cut-leaved toothwort
Cardamine longii Fern. Long's bitter-cress
Carex adusta Boott swarthy sedge
Carex aestivalis M.A. Curtis ex Gray summer sedge
Carex alata Torr. broad-winged sedge
Carex albursina Sheldon white bear sedge
Carex arctogena H. Sm. capitate sedge
Carex atratiformis Britt. scabrous black sedge
Carex backii Boott Back's sedge
Carex bicknellii Britt. Bicknell’s sedge
Carex bullata Schkuhr ex Willd. button sedge
Carex buxbaumii Wahlenb. brown bog sedge
Carex capillaris L. ssp. fuscidula (V. Krecz. ex Egorova)
hair-like sedge
A. & D. Löve
Carex castanea Wahlenb. chestnut sedge
Carex chordorrhiza Ehrh. ex L. f. rope-root sedge
Carex cristatella Britt. crested sedge
Carex eburnea Boott bristle-leaved sedge
Carex exilis Dewey meager sedge
Carex festucacea Schkuhr ex Willd. fescue sedge
Carex glaucodea Tuckerman ex Olney blue sedge
Carex granularis Muhl. ex Willd. limestone-meadow sedge
Carex hitchcockiana Dewey Hitchcock's sedge
Carex livida (Wahlenb.) Willd. livid sedge
Carex molesta Mackenzie ex Bright troublesome sedge
Carex nigra (L.) Reichard smooth black sedge
Carex polymorpha Muhl. variable sedge
Carex retroflexa Muhl. ex Willd. reflexed sedge
Carex rostrata Stokes beaked sedge
Carex seorsa Howe weak stellate sedge
Carex siccata Dewey dry land sedge
New Hampshire Official Rare Plants List – Effective 01/01/2020
Scientific Name (with authority) Common Name
Carex sparganioides Muhl. ex Willd. bur-reed sedge
Carex striata Michx. Walter's sedge
Carex tenuiflora Wahlenb. sparse-flowered sedge
Carex trichocarpa Muhl. ex Willd. hairy-fruited sedge
Carex umbellata Schkuhr ex Willd. parasol sedge
Carex wiegandii Mackenzie Wiegand's sedge
Castilleja septentrionalis Lindl. northern painted-cup
Cenchrus longispinus (Hack.) Fern. long-spined sandbur
Chamaecrista nictitans (L.) Moench ssp. nictitans var.
wild sensitive-pea
nictitans
Chenopodium foggii H.A. Wahl Fogg's goosefoot
Cirsium horridulum Michx. var. horridulum yellow thistle
Clematis occidentalis (Hornem.) DC. ssp. occidentalis purple virgin's bower
Coleataenia longifolia (Torr.) Soreng ssp. longifolia long-leaved redtop-panicgrass
Collinsonia canadensis L. northern horsebalm
Corallorhiza odontorhiza (Willd.) Poir. var. odontorhiza fall coral-root
Corydalis aurea Willd. golden corydalis
Crassula aquatica (L.) Schoenl. pygmy-weed
Crataegus faxonii Sarg. Faxon's hawthorn
Crataegus oakesiana Egglest. Oakes' hawthorn
Crataegus populnea Ashe poplar hawthorn
Crepidomanes intricatum (Farrar) Ebihara & Weakley Appalachian bristle fern
Crotalaria sagittalis L. arrow-head rattlebox
Cryptogramma stelleri (Gmel.) Prantl slender rock-brake
Cuscuta cephalanthi Engelm. buttonbush dodder
Cyperus erythrorhizos Muhl. red-root umbrella sedge
Cyperus grayi Torr. Gray's umbrella sedge
Cyperus houghtonii Torr. Houghton's umbrella sedge
Cyperus odoratus L. fragrant umbrella sedge
Cyperus subsquarrosus (Muhl.) Bauters small-flowered dwarf-bulrush
Cypripedium arietinum Ait. f. ram's-head lady's-slipper
Cypripedium parviflorum Salisb. var. makasin (Farw.)
greater yellow lady's-slipper
Sheviak
Cypripedium reginae Walt. showy lady's-slipper
Desmodium cuspidatum (Muhl. ex Willd.) DC. ex G. Don large-bracted tick-trefoil
Desmodium marilandicum (L.) DC. smooth small-leaved tick-trefoil
Desmodium obtusum (Muhl. ex Willd.) DC. stiff tick-trefoil
Dichanthelium sphaerocarpon (Ell.) Gould round-fruited rosette-panicgrass
Digitaria filiformis (L.) Koel. var. filiformis slender crabgrass
Digitaria filiformis (L.) Koel. var. laeviglumis (Fern.)
smooth slender crabgrass
Wipff
New Hampshire Official Rare Plants List – Effective 01/01/2020
Scientific Name (with authority) Common Name
Diphasiastrum sitchense (Rupr.) Holub Sitka ground-cedar
Diplachne maritima Bickn. salt-meadow beetle grass
Draba cana Rydb. canescent whitlow-mustard
Dryopteris filix-mas (L.) Schott ssp. brittonii Fras.-Jenk. &
male wood fern
Widen
Echinochloa walteri (Pursh) Heller coast barnyard grass
Elatine americana (Pursh) Arn. American waterwort
Eleocharis diandra C. Wright Wright's spikesedge
Eleocharis erythropoda Steud. red-footed spikesedge
Eleocharis intermedia J.A. Schultes mudflat spikesedge
Eleocharis nitida Fern. quill spikesedge
Eleocharis obtusa (Willd.) J.A. Schultes var. peasei Svens. Pease's blunt spikesedge
Eleocharis ovata (Roth) Roemer & J.A. Schultes ovoid spikesedge
Eleocharis quinqueflora (F.X. Hartmann) Schwarz ssp.
few-flowered spikesedge
fernaldii (Svens.) Hultén
Eleocharis tuberculosa (Michx.) Roemer & J.A. Schultes long-tubercled spikesedge
Elymus macgregorii R. Brooks & J.J.N. Campb. early wild-rye
Epilobium anagallidifolium Lam. pimpernel willow-herb
Epilobium lactiflorum Hausskn. white-flowered willow-herb
Equisetum palustre L. marsh horsetail
Eragrostis frankii C.A. Mey. ex Steud. sandbar lovegrass
Eragrostis hypnoides (Lam.) B.S.P. teel lovegrass
Eriophorum angustifolium Honckeny ssp. angustifolium tall cottonsedge
Erythranthe moschata (Douglas ex Lindl.) G.L. Nesom musky monkey-flower
Eupatorium pubescens Muhl. ex Willd. hairy thoroughwort
Eupatorium sessilifolium L. upland thoroughwort
Euphorbia polygonifolia L. seaside sandmat
Euphrasia oakesii Wettst. Oakes' eyebright
Euphrasia williamsii B.L. Robins. Williams' eyebright
Eutrochium fistulosum (Barratt) E.E. Lamont hollow Joe-Pye weed
Festuca prolifera (Piper) Fern. proliferous fescue
Galium brevipes Fern. & Wieg. limestone swamp bedstraw
Galium obtusum Bigelow ssp. obtusum blunt-leaved bedstraw
Galium pilosum Ait. var. pilosum hairy bedstraw
Gentianella quinquefolia (L.) Small ssp. quinquefolia stiff dwarf-gentian
Geocaulon lividum (Richards.) Fern. false toadflax
Geranium carolinianum L. Carolina crane's-bill
Glyceria acutiflora Torr. sharp-flowered mannagrass
Glyceria septentrionalis A.S. Hitchc. var. septentrionalis floating mannagrass
Graphephorum melicoides (Michx.) Desv. graphephorum
New Hampshire Official Rare Plants List – Effective 01/01/2020
Scientific Name (with authority) Common Name
Hackelia deflexa (Wahlenb.) Opiz ssp. americana (Gray)
nodding stickseed
A. & D. Löve
Harrimanella hypnoides (L.) Coville moss-plant
Hibiscus moscheutos L. ssp. moscheutos swamp rose-mallow
Hieracium robinsonii (Zahn) Fern. Robinson's hawkweed
Hieracium umbellatum L. narrow-leaved hawkweed
Homalosorus pycnocarpos (Spreng.) Pichi Sermolli narrow-leaved glade fern
Hottonia inflata Ell. American featherfoil
Houstonia longifolia Gaertn. long-leaved bluet
Hudsonia ericoides L. golden heather
Huperzia selago (L.) Bernh. ex Schrank & Mart. northern firmoss
Hypericum ascyron L. ssp. pyramidatum (Ait.) Robson great St. John's-wort
Ilex glabra (L.) Gray evergreen winterberry
Isoetes acadiensis Kott Acadian quillwort
Isoetes engelmannii A. Braun Engelmann's quillwort
Isoetes lacustris L. lake quillwort
Isoetes septentrionalis D.F. Brunton northern shore quillwort
Isotria verticillata (Muhl. ex Willd.) Raf. large whorled pogonia
Juncus alpinoarticulatus Chaix ex Vill. ssp. americanus
northern green rush
(Farw.) Hämet-Ahti
Juncus brachycephalus (Engelm.) Buch. small-headed rush
Juncus dichotomus Ell. forked rush
Juncus secundus Beauv. ex Poir. lopsided rush
Juncus stygius L. ssp. americanus (Buch.) Hultén moor rush
Juniperus horizontalis Moench creeping juniper
Lechea tenuifolia Michx. narrow-leaved pinweed
Lemna trisulca L. ivy-leaved duckweed
Lemna valdiviana Phillipi pale duckweed
Lespedeza procumbens Michx. trailing bush-clover
Lespedeza virginica (L.) Britt. slender bush-clover
Leymus mollis (Trin.) Hara ssp. mollis American lyme grass
Liatris novae-angliae (Lunell) Shinners var. novae-angliae northern blazing star
Lilaeopsis chinensis (L.) Kuntze eastern grasswort
Lilium superbum L. Turk's-cap lily
Limniris prismatica (Pursh) Rodion. slender blue iris
Limosella australis R. Br. Atlantic mudwort
Lindernia dubia (L.) Pennell var. anagallidea (Michx.) unpretentious yellow-seeded false
Cooperrider pimpernel
Linum sulcatum Riddell var. sulcatum grooved yellow flax
Lonicera oblongifolia (Goldie) Hook. swamp honeysuckle
Luzula confusa Lindeberg northern wood rush
New Hampshire Official Rare Plants List – Effective 01/01/2020
Scientific Name (with authority) Common Name
Luzula spicata (L.) DC. spiked wood rush
Lycopodiella alopecuroides (L.) Cranfill foxtail bog-clubmoss
Lycopodiella appressa (Chapman) Cranfill appressed bog-clubmoss
Lygodium palmatum (Bernh.) Sw. American climbing fern
Malaxis monophyllos (L.) Sw. ssp. brachypoda (Gray) A.
white adder's-mouth
& D. Löve
Menispermum canadense L. Canada moonseed
Mikania scandens (L.) Willd. climbing hempvine
Mononeuria glabra (Michx.) Dillenb. & Kadereit Appalachian sandplant
Muhlenbergia sobolifera (Muhl. ex Willd.) Trin. rock muhly
Muhlenbergia tenuiflora (Willd.) B.S.P. slender muhly
Nabalus boottii DC. Boott's rattlesnake-root
Nabalus serpentarius (Pursh) Hook. lion's-foot rattlesnake-root
Neottia auriculata (Wieg.) Szlach. auricled twayblade
Nuphar microphylla (Pers.) Fern. small-leaved pond-lily
Oligoneuron album (Nutt.) Nesom white flat-topped-goldenrod
Omalotheca supina (L.) DC. alpine arctic-cudweed
Ophioglossum pusillum Raf. northern adder's-tongue fern
Osmorhiza berteroi DC. mountain sweet-cicely
Oxybasis rubra (L.) S. Fuentes, Uotila & Borsch var. rubra red goosefoot
Oxyria digyna (L.) Hill mountain-sorrel
Packera obovata (Muhl. ex Willd.) W.A. Weber & A. Löve running groundsel
Panicum philadelphicum Bernh. ex Trin. ssp.
Philadelphia panicgrass
Philadelphicum
Paronychia canadensis (L.) Wood smooth forked whitlow-wort
Pellaea atropurpurea (L.) Link purple cliff-brake
Persicaria robustior (Small) Bickn. stout dotted smartweed
Petasites frigidus (L.) Fries var. palmatus (Ait.) Cronq. northern sweet-coltsfoot
Phleum alpinum L. ssp. alpinum mountain Timothy
Phragmites americanus (Saltonstall, P.M. Peterson &
American reed
Soreng) A. Haines
Pilea fontana (Lunell) Rydb. lesser clearweed
Pinguicula vulgaris L. ssp. vulgaris violet butterwort
Piptatheropsis canadensis (Poir.) Romasch., P.M. Peterson
Canada mountain-rice grass
& Soreng
Piptochaetium avenaceum (L.) Parodi black-seeded spear grass
Pluchea odorata (L.) Cass. var. succulenta (Fern.) Cronq. sweet-scented camphorweed
Poa glauca Vahl ssp. Glauca glaucous blue grass
Poa laxa Haenke ssp. fernaldiana (Nannf.) N. Hylander wavy blue grass
Poa pratensis L. ssp. alpigena (Fries ex Blytt) Hiitonen alpine Kentucky blue grass
Polygala cruciata L. ssp. aquilonia (Fern. & Schub.) A.
drum-heads milkwort
Haines
New Hampshire Official Rare Plants List – Effective 01/01/2020
Scientific Name (with authority) Common Name
Polygonum erectum L. upright knotweed
Polygonum ramosissimum Michx. ssp. prolificum (Small)
prolific yellow-flowered knotweed
Costea & Tardif
Polygonum tenue Michx. slender knotweed
Potamogeton alpinus Balbis reddish pondweed
Potamogeton foliosus Raf. ssp. foliosus leafy pondweed
Potamogeton gemmiparus (J.W. Robbins) J.W. Robbins ex
budding pondweed
Morong
Potamogeton obtusifolius Mert. & Koch blunt-leaved pondweed
Potamogeton praelongus Wulfen white-stemmed pondweed
Potamogeton richardsonii (Benn.) Rydb. Richardson's pondweed
Potamogeton vaseyi J.W. Robbins Vasey's pondweed
Potamogeton zosteriformis Fern. flat-stem pondweed
Potentilla litoralis Rydb. coast cinquefoil
Potentilla robbinsiana Oakes ex Rydb. Robbins' cinquefoil
Proserpinaca pectinata Lam. comb-leaved mermaid-weed
Pseudognaphalium micradenium (Weatherby) Nesom Weatherby's rabbit-tobacco
Pterospora andromedea Nutt. pine-drops
Puccinellia pumila (Vasey) A.S. Hitchc. tundra alkali grass
Pycnanthemum incanum (L.) Michx. var. incanum hoary mountain-mint
Pycnanthemum torrei Benth. Torrey's mountain-mint
Pycnanthemum virginianum (L.) T. Dur. & B.D. Jackson ex
Virginia mountain-mint
B.L. Robins. & Fern.
Pyrola asarifolia Michx. ssp. asarifolia pink shinleaf
Quercus macrocarpa Michx. mossy-cup oak
Ranunculus ambigens S. Wats. water-plantain crowfoot
Ranunculus fascicularis Muhl. ex Bigelow early crowfoot
Rhinanthus minor L. ssp. groenlandicus (Ostenf.) L. Neum. Greenland little yellow-rattle
Rhododendron periclymenoides (Michx.) Shinners pink azalea
Rhynchospora capillacea Torr. needle beaksedge
Rosa acicularis Lindl. ssp. sayi (Schwein.) W.H. Lewis bristly rose
Rotala ramosior (L.) Koehne toothcup
Rubus cuneifolius Pursh sand blackberry
Rumex pallidus Bigelow seabeach dock
Sabulina michauxii (Fenzl) Dillenb. & Kadereit Michaux's sandplant
Sagina nodosa (L.) Fenzl ssp. borealis Crow boreal knotted pearlwort
Sagittaria cuneata Sheldon northern arrowhead
Sagittaria filiformis J.G. Sm. narrow-leaved arrowhead
Sagittaria rigida Pursh sessile-fruited arrowhead
Sagittaria spatulata (J.G. Sm.) Buch. spongy-leaved arrowhead
Sagittaria teres S. Wats. quill-leaved arrowhead
New Hampshire Official Rare Plants List – Effective 01/01/2020
Scientific Name (with authority) Common Name
Salicornia ambigua Michx. perennial glasswort
Salicornia bigelovii Torr. dwarf glasswort
Salix argyrocarpa Anderss. Labrador willow
Salix exigua Nutt. ssp. interior (Rowlee) Cronq. sandbar willow
Salix herbacea L. snow-bed willow
Salix pellita (Anderss.) Anderss. ex Schneid. satiny willow
Samolus parviflorus Raf. seaside brookweed
Sanicula canadensis L. var. canadensis Canada sanicle
Sanicula odorata (Raf.) K.M. Pryer & L.R. Phillippe clustered sanicle
Saxifraga cernua L. nodding saxifrage
Saxifraga paniculata P. Mill. ssp. paniculata White Mountain saxifrage
Saxifraga rivularis L. ssp. rivularis alpine-brook saxifrage
Schistostega pennata (Hedwig) F. Weber & D. Mohr goblin's gold
Scirpus ancistrochaetus Schuyler northeastern bulrush
Scirpus georgianus Harper Georgia bulrush
Scirpus longii Fern. Long's bulrush
Scirpus pendulus Muhl. rufous bulrush
Scirpus polyphyllus Vahl leafy bulrush
Scleria pauciflora Muhl. ex Willd. var. pauciflora few-flowered nutsedge
Scleria reticularis Michx. netted nutsedge
Sclerolepis uniflora (Walt.) B.S.P. sclerolepis
Senna hebecarpa (Fern.) Irwin & Barneby northern wild senna
Sericocarpus linifolius (L.) B.S.P. narrow-leaved white-topped-aster
Sibbaldia procumbens L. sibbaldia
Silene acaulis (L.) Jacq. moss campion
Silene caroliniana Walt. ssp. pensylvanica (Michx.)
wild campion
Clausen
Sisyrinchium mucronatum Michx. needle-tipped blue-eyed-grass
Solidago patula Muhl. ex Willd. var. patula rough-leaved goldenrod
Solidago speciosa Nutt. var. speciosa showy goldenrod
Sparganium androcladum (Engelm.) Morong branched bur-reed
Sphagnum andersonianum R.E. Andrus peat moss
Sphagnum angermanicum Melin peat moss
Sphagnum brevifolium (Lindberg) J. Röll peat moss
Sphagnum contortum Schultz peat moss
Sphagnum flavicomans (Cardot) Warnstorf in H. G. A.
peat moss
Engler
Sphenopholis obtusata (Michx.) Scribn. prairie wedgescale
Spiranthes casei Catling & Cruise var. casei Case's ladies'-tresses
Spiranthes lucida (H.H. Eat.) Ames shining ladies'-tresses
Sporobolus cryptandrus (Torr.) Gray sand dropseed
New Hampshire Official Rare Plants List – Effective 01/01/2020
Scientific Name (with authority) Common Name
Sporobolus neglectus Nash small dropseed
Staphylea trifolia L. American bladdernut
Stuckenia filiformis (Pers.) Boerner thread-leaved false pondweed
Stuckenia pectinata (L.) Boerner Sago false pondweed
Suaeda maritima (L.) Dumort. ssp. richii (Fern.) Bassett &
Rich's herbaceous sea-blite
C.W. Crompton
Subularia aquatica L. ssp. americana Mulligan & Calder American water-awlwort
Symphyotrichum tenuifolium (L.) Nesom var. tenuifolium perennial saltmarsh American-aster
Tephrosia virginiana (L.) Pers. wild goat's-rue
Thalictrum revolutum DC. waxy-leaved meadow-rue
Thalictrum thalictroides (L.) Eames & Boivin anemone meadow-rue
Triantha glutinosa (Michx.) Baker sticky false asphodel
Trichophorum planifolium (Spreng.) Palla bashful clubsedge
Triosteum aurantiacum Bickn. var. aurantiacum orange-fruited horse-gentian
Triplasis purpurea (Walt.) Chapman var. purpurea purple sandgrass
Utricularia resupinata B.D. Greene ex Bigelow resupinate bladderwort
Uvularia grandiflora J.E. Sm. large-flowered bellwort
Uvularia perfoliata L. perfoliate bellwort
Vahlodea atropurpurea (Wahlenb.) Fries ex Hartman arctic hair grass
Valeriana uliginosa (Torr. & Gray) Rydb. marsh valerian
Veronica wormskjoldii Roemer & J.A. Schultes var.
American alpine speedwell
wormskjoldii
Viburnum rafinesquianum J.A. Schultes var.
downy arrowwood
rafinesquianum
Viola nephrophylla Greene northern bog violet
Viola palmata L. var. palmata palmate violet
Vulpia octoflora (Walt.) Rydb. var. tenella (Willd.) Fern. eight-flowered six-weeks grass
Woodsia glabella R. Br. ex Richards. smooth cliff fern
Woodsia obtusa (Spreng.) Torr. ssp. obtusa blunt-lobed cliff fern
Woodwardia areolata (L.) T. Moore netted chain fern
Zannichellia palustris L. horned-pondweed
Zanthoxylum americanum P. Mill. common prickly-ash
New Hampshire Official Rare Plants List – Effective 01/01/2020
Table 312.3 State Listed Threatened Plant Species
Scientific Name (with authority) Common Name
Acer nigrum Michx. f. black maple
Agalinis maritima (Raf.) Raf. ssp. maritima saltmarsh agalinis
Anthoxanthum monticola (Bigelow) Y. Schouten &
alpine sweet grass
Veldkamp ssp. Monticola
Aristida longespica Poir. var. geniculata (Raf.) Fern. red threeawn
Asclepias amplexicaulis J.E. Smith clasping milkweed
Betula glandulosa Michx. glandular birch
Betula minor (Tuckerman) Fern. dwarf birch
Betula nigra L. river birch
Bidens beckii Torr. ex Spreng. Beck's water-marigold
Boechera canadensis (L.) Al-Shehbaz sicklepod rockcress
Boechera missouriensis (Greene) Al-Shehbaz green rockcress
Calamagrostis stricta (Timm) Koel. ssp. inexpansa (Gray)
northern neglected reed grass
C.W. Greene
Cardamine maxima (Nutt.) Wood large toothwort
Carex aurea Nutt. golden-fruited sedge
Carex baileyi Britt. Bailey's sedge
Carex bigelowii Torr. ex Schwein. ssp. bigelowii Bigelow's sedge
Carex cephaloidea (Dewey) Dewey thin-leaved sedge
Carex cumulata (Bailey) Mackenzie clustered sedge
Carex diandra Schrank lesser tussock sedge
Carex garberi Fern. elk sedge
Carex scirpoidea Michx. ssp. scirpoidea scirpus-like sedge
Caulophyllum giganteum (Farw.) Loconte & Blackwell early blue cohosh
Cyperus squarrosus L. incurved umbrella sedge
Cypripedium parviflorum Salisb. var. pubescens (Willd.)
large yellow lady's-slipper
Knight
Desmodium rotundifolium DC. round-leaved trailing tick-trefoil
Diapensia lapponica L. ssp. lapponica diapensia
Dryopteris fragrans (L.) Schott fragrant wood fern
Epilobium hornemannii Reichenb. ssp. hornemannii Hornemann's willow-herb
Euthamia caroliniana (L.) Greene ex Porter & Britt. coastal plain grass-leaved-goldenrod
Galearis spectabilis (L.) Raf. showy orchid
Gaylussacia bigeloviana (Fern.) Sorrie & Weakley dwarf huckleberry
Gentianopsis crinita (Froel.) Ma greater fringed-gentian
Geum fragarioides (Michx.) Smedmark Appalachian barren-strawberry
Geum peckii Pursh White Mountain avens
Hackelia virginiana (L.) I.M. Johnston Virginia stickseed
Halenia deflexa (Sm.) Griseb. ssp. deflexa American spurred-gentian
Heteranthera dubia (Jacq.) MacM. grass-leaved mud-plantain
New Hampshire Official Rare Plants List – Effective 01/01/2020
Scientific Name (with authority) Common Name
Hippuris vulgaris L. common mare's-tail
Hudsonia tomentosa Nutt. hairy hudsonia
Huperzia appressa (Desv.) A. & D. Löve mountain firmoss
Hydrophyllum virginianum L. eastern waterleaf
Hypoxis hirsuta (L.) Coville common star-grass
Isotria medeoloides (Pursh) Raf. small whorled pogonia
Iva frutescens L. marsh elder
Kalmia procumbens (L.) Gift, Kron & P.F. Stevens ex
alpine-azalea
Galasso, Banfi & F. Conti
Liparis loeselii (L.) L.C. Rich. Loesel's wide-lipped orchid
Lobelia kalmii L. brook lobelia
Lupinus perennis L. ssp. perennis wild lupine
Lysimachia thyrsiflora L. tufted yellow-loosestrife
Neottia convallarioides (Sw.) Rich. broad-leaved twayblade
Neottia cordata (L.) Rich. heart-leaved twayblade
Packera paupercula (Michx.) W.A. Weber & A. Löve balsam groundsel
Panax quinquefolius L. American ginseng
Parnassia glauca Raf. fen grass-of-Parnassus
Paronychia argyrocoma (Michx.) Nutt. silverling
Phyllodoce caerulea (L.) Bab. purple mountain-heath
Pinus banksiana Lamb. Jack pine
Platanthera flava (L.) Lindl. var. herbiola (R. Br. in Ait.)
northern tubercled bog-orchid
Luer
Polygonum douglasii Greene Douglas' knotweed
Potamogeton nodosus Poir. long-leaved pondweed
Rhododendron lapponicum (L.) Wahlenb. Lapland rosebay
Rhododendron maximum L. giant rhododendron
Rubus chamaemorus L. baked apple berry
Salix pedicellaris Pursh bog willow
Salix planifolia Pursh ssp. planifolia tea-leaved willow
Salix uva-ursi Pursh bearberry willow
Sanicula trifoliata Bickn. large-fruited sanicle
Solidago odora Ait. ssp. odora licorice goldenrod
Sparganium eurycarpum Engelm. ex Gray great bur-reed
Sparganium natans L. arctic bur-reed
Sphagnum lindbergii Schimper peat moss
Sphagnum majus ssp. norvegicum K. I. Flatberg peat moss
Sphagnum pylaesii Bridel peat moss
Sphagnum riparium Ångström peat moss
Sphagnum subfulvum Sjörs peat moss
Sphagnum wulfianum Girgensohn peat moss
New Hampshire Official Rare Plants List – Effective 01/01/2020
Scientific Name (with authority) Common Name
Symphyotrichum ciliolatum (Lindl.) A. & D. Löve Lindley's American-aster
Symphyotrichum patens (Ait.) Nesom var. patens late purple American-aster
Triphora trianthophoros (Sw.) Rydb. ssp. trianthophoros three-birds orchid
Vaccinium boreale Hall & Aalders northern blueberry
Vaccinium cespitosum Michx. dwarf blueberry
Viburnum edule (Michx.) Raf. squashberry
Viola palustris L. var. palustris northern marsh violet
Viola pedata L. var. pedata bird-foot violet
Viola rostrata Pursh long-spurred violet
New Hampshire Official Rare Plants List – Effective 01/01/2020
Table 312.4 State Listed Extirpated Plant Species
Scientific Name (with authority) Common Name
Carex tetanica Schkuhr rigid sedge
Castilleja coccinea (L.) Spreng. scarlet painted-cup
Honckenya peploides (L.) Ehrh. ssp. robusta (Fern.) Hulten seaside-sandwort
Mertensia maritima (L.) S.F. Gray var. maritima seaside bluebells
